A thermal processing system includes a thermal torch for processing a workpiece, a power supply for providing power to the thermal torch, a positioning system for relatively moving the thermal torch and the workpiece, a controller for controlling the thermal processing system, and a deterministic-based communication network, such as, for example, a network which operates using SERCOS. The deterministic-based communications network connects at least the controller, the power supply, and the positioning system of the thermal processing system together.